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參數(shù)資料
| 型號： | MAX4380 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| 中文描述： | 超小型、低成本、210MHz、單電源運(yùn)算放大器，帶有滿擺幅輸出及禁止功能 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 755K |
| 代理商： | MAX4380 |
M
Ultra-Small, Low-Cost, 210MHz, Single-Supply
Op Amps with Rail-to-Rail Outputs and Disable
12
______________________________________________________________________________________
Output Capacitive Loading and Stability
The MAX4380
–
MAX4384 are optimized for AC perfor-
mance. They are not designed to drive highly reactive
loads, which decrease phase margin and may produce
excessive ringing and oscillation. Figure 2 shows a cir-
cuit that eliminates this problem. Figure 3 is a graph of
the Optimal Isolation Resistor (R
S
) vs. Capacitive Load.
Figure 4 shows how a capacitive load causes exces-
sive peaking of the amplifier
’
s frequency response if
the capacitor is not isolated from the amplifier by a
resistor. A small isolation resistor (usually 10
to 15
)
placed before the reactive load prevents ringing and
oscillation. At higher capacitive loads, AC performance
is controlled by the interaction of the load capacitance
and the isolation resistor. Figure 5 shows the effect of a
15
isolation resistor on closed-loop response.
Chip Information
MAX4380 TRANSISTOR COUNT: 66
MAX4381 TRANSISTOR COUNT: 132
MAX4382 TRANSISTOR COUNT: 196
MAX4383 TRANSISTOR COUNT: 264
MAX4384 TRANSISTOR COUNT: 264
6
-4
100k
10M
100M
1M
1G
-2
FREQUENCY (Hz)
G
0
2
4
5
-3
-1
1
3
C
L
= 10pF
C
L
= 15pF
C
L
= 5pF
Figure 4. Small-Signal Gain vs. Frequency with Load
Capacitance and No Isolation Resistor
3
-7
100k
10M
100M
1M
1G
-5
FREQUENCY (Hz)
G
-3
-1
1
2
-6
-4
-2
0
C
L
= 68pF
R
ISO
= 15
C
L
= 120pF
C
L
= 47pF
Figure 5. Small-Signal Gain vs. Frequency with Load
Capacitance and 27
Isolation Resistor
R
G
R
F
R
ISO
C
L
V
OUT
V
IN
MAX438 _
Figure 2. Driving a Capacitive Load Through an Isolation Resistor
9
11
10
13
12
15
14
16
0
200
C
LOAD
(pF)
100
300
400
50
250
150
350
450 500
ISOLATION RESISTANCE
vs. CAPACITIVE LOAD
M
R
I
)
Figure 3. Isolation Resistance vs. Capacitive Load
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| MAX4386EESD | Low-Cost, 230MHz, Single/Quad Op Amps with Rail-to-Rail Outputs and 【15kV ESD Protection |
| MAX4386EEUD | Low-Cost, 230MHz, Single/Quad Op Amps with Rail-to-Rail Outputs and 【15kV ESD Protection |
| MAX4385E | Low-Cost, 230MHz, Single/Quad Op Amps with Rail-to-Rail Outputs and 【15kV ESD Protection |
| MAX4385EEUK-T | Low-Cost, 230MHz, Single/Quad Op Amps with Rail-to-Rail Outputs and 【15kV ESD Protection |
| MAX4392 | Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4380EUT | 制造商:Maxim Integrated Products 功能描述:ULTRA-SMALL LOW-COST 210MHZ SING - Rail/Tube |
| MAX4380EUT+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL VOLT FDBK R-R O/P 5.5V/11V 6PIN SOT-23 - Rail/Tube |
| MAX4380EUT+T | 功能描述:高速運(yùn)算放大器 210MHz Single-Supply w/Rail-Rail Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4380EUT-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4380EXT | 制造商:Maxim Integrated Products 功能描述:ULTRA-SMALL, LOW-COST, 210MHZ, SINGLE-SUPPLY - Rail/Tube |
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